Jar clamping device



A. LARSON 2,3

JAR CLAMPING DEVICE Filed Sept. 10, 1943 Aiiorrqqys Patented Feb. 20, 1945 orrics JAR CLAMPING DEVICE Anton L. Larson,

of one-fourth to Olga E. Larson,

Sturgeon Lake, Minn., asslgnor Sturgeon Lake,

and one-fourth to Per Albert Monson and one- Monson, both of Minnefourth to Esther T.

apolis, Minn.

' Application September 10, 1943, Serial No. 501,773

(oral-3.31)

3 Claims.

My invention relates to an improved apparatus particularly adapted for clamping fruit jars and the like against rotation while applying or removing their screw-threaded caps, but it should be understood that the invention need not be restricted to such use and may, in fact, findother and equally valuable uses.

An important object of thepresent invention is the provision of an improved clamping device, for the above noted and analogous uses, which is simple and inexpensive to produce, easily operated, and which device is provided with a. novel and inexpensive means whereby to lock the clamping band in operative position so as to leave both of the operators hands thereafter free for use in removing the cover or cap.

The above and other highly important objects and advantages of the invention will be made apparent from the following specification, claims, and appended drawing.

In the drawing, like characters indicate like parts throughout the several views.

Referring to the drawing:

Fig. 1 is a plan view of a preferred embodiment of the invention; I

Fig. 2 is a view of the preferred embodiment of the invention in side elevation; and

Fig. 3 is a greatly enlarged fragmentary perspective view illustrating cooperating ends of the operating lever and clamping band in slightly segregated relation, as in the process of bringing the lever into operative engagement with the clamping band.

The bed-plate or base of the improved clamping device is indicated as an entirety by 4' an is adapted to be anchored to a suitable base of support, such as a kitchen counter, by means of suitable anchoring means, such as screws, bolts, nails, or the like, not shown. Rigidly secured to and projecting upwardly from this bed-plate 4 is a headed anchoring post 5 to which is pivotally anchored one end of a flexible clamping band 6, which, as shown, is a composite structure made up of a flexible steel outer layer 1. and a flexible and pliable inner layer 8, which latter may be of rubber, synthetic rubber, leather, or suitable fiber composition or the like. Thi clamping band 6 is of loop-like shape and is adapted to receive a fruit jar or the like indicated by y, and is provided on the outer surface of its free end portion with spaced yokes 9 carrying cross pins III for detachable engagement with a hook II on the projecting inner end of a lever H. The yokes 9 are riveted to the outer metal layer 1 ofthe clamping bandG.

The lever I 2 is intermediately pivoted to the bed-plate 4 by a headed pivot bolt ,l3 and the projected outer end of the lever I2 is formed to provide a hand grip I4. A cam wheel indicated as an entirety by His eccentrically pivoted to the bed-plate 4 at 16, and is provided with an upstanding operating handle IL This cam l5 is preferably provided at its periphery with a resilient tire l8 of rubber or similar material which is operative directly on an adjacent toothed portion I 9 of the outwardlyprojecting portion of the lever l2.

Operation A jar y to be clamped in place for the purpose of removing its cover or cap is positioned approximately as shown in Figs. 1 and 2, within the loop-like clamping band 6. If the jar is a large size jar such as a Mason jar, the hook ll of the lever I 2 will be hooked in the yoke 9 at the extreme end of the clamping band, while if the jar is a medium size jar the hook II will be hooked in the intermediate yoke 9, and if the jar is of the smaller siZe the hook II will be hooked in the inner yoke 9 of the clamping band. The

hook H engages directly with a pin I0 of the engaged yoke, which pin also engages and is held against displacement in one direction by projecting pins from the end of hook II, so as to form with said hook a sort of notch in which the pin I0 seat. When the jar is in position as shown in Figs. 1 and 2 and the hook ll engaged with the proper yoke, the outer end I 4 of the lever I2 is moved in a counter-clockwise direction to produce the desired clamping pressure of the band 6 on the jar, and when such pressure has been developed, the cam wheel I5 is rotated against the toothed portion of lever l2 to lock the lever in its established operative position. With the lever thus locked, clamping pressure on the jar will be retained without exertion of further manual pressure on the lever l2, and both the operators hands are free for use in removing the cover or cap of the jar, not shown.

What I claim is: v

1. In a jar clamping device, a bed-plate, an anchoring post rigidly secured to and projecting upwardly from said bed-plate, a flexible clamping band anchored at one end to said post, a lever intermediately pivoted to the bed-plate at a point remote from said anchoring post and having its inner end pivotally attached to a free end portion of the clamping band, and a cam eccentrically pivoted to the bed-plate and engaging the outer 20 on the lever l2 spaced slightly' of said lever is provided with a hook for optional engagement with said yokes t0 accommodate the clamping band to jars of different diameters.

3. The structure defined in claim 1, in which the periphery of the cam is fitted with a resilient tire, and in which the cooperating portion of the lever is toothed.

ANTON L. LARSON. 

